Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SYSTEM AND METHOD FOR TARGET SOUND SIGNAL RESTORATION
Document Type and Number:
WIPO Patent Application WO/2017/204226
Kind Code:
A1
Abstract:
Provided are a system and a method for voice signal restoration that are able to restore, with a high degree of accuracy, a target sound signal from a noise-containing sound signal without using prior information. A common sparse component estimation unit 7 that receives, as input, amplitude spectrograms of M channels is provided for estimating a common sparse component containing a sparse time-frequency component which is highly likely to be commonly included in the amplitude spectrograms of the largest number of channels among the M channels. A phase restoration unit 9 restores a phase of the common sparse component so as to obtain a target sound complex spectrogram. A target sound signal conversion unit 13 converts the target sound complex spectrogram into a target sound signal, which is a temporal signal.

Inventors:
BANDO Yoshiaki
YOSHII Kazuyoshi
ITOYAMA Katsutoshi
OKUNO Hiroshi
Application Number:
JP2017/019259
Publication Date:
November 30, 2017
Filing Date:
May 23, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KYOTO UNIVERSITY (36-1, Yoshida-honmachi Sakyo-ku, Kyoto-sh, Kyoto 01, 〒6068501, JP)
International Classes:
G10L21/0264; G10L21/0208
Attorney, Agent or Firm:
NISHIURA Tsuguharu (NISHIURA & ASSOCIATES, Sankaido Building 8F9-13,Akasaka 1-chome,Minato-k, Tokyo 52, 〒1070052, JP)
Download PDF: